Air disc brake pad

Abstract

An air disc brake pad 10 for inserting into a brake pad carrier 12, the brake pad 10 including a backplate 14 and a friction material 16 mounted on one side of the backplate 14, the pad periphery 30 including an inner side 20, an outer side 18 and first and second ends 22, 24; in which at least a portion of the pad periphery 30 includes a thickened edge 36, 38, the thickened edge 36, 38 extending in a direction opposing the friction material 16; and at least one rear protrusion 26, 28 is provided, the at least one rear protrusion 26, 28 extending from the backplate 14 in a direction opposing the friction material 16; and in which the depth of the at least one rear protrusion 26, 28 being greater than the depth of the thickened edge 36, 38. See FIG. 3.

1 . An air disc brake pad for inserting into a brake pad carrier, the brake pad including a backplate and a friction material mounted on one side of the backplate, the pad periphery including an inner side, an outer side and first and second ends;
 in which at least a portion of the pad periphery includes a thickened edge, the thickened edge extending in a direction opposing the friction material; and   at least one rear protrusion is provided, the at least one rear protrusion extending from the backplate in a direction opposing the friction material;   in which the depth of the at least one rear protrusion being greater than the depth of the thickened edge;   in which the air disc brake pad includes first and second abutment tabs for providing horizontal abutment with the brake pad carrier, the first abutment tab extending from the first end and the second abutment tab extending from the second end; and   in which at least a portion of the thickened edge extends along at least a portion of one of the first and second ends and a corresponding abutment tab.   
     
     
         2 . The air disc brake pad as claimed in  claim 1 , in which the at least one rear protrusion has a depth of at least 4 mm. 
     
     
         3 . The air disc brake pad as claimed in  claim 1 , in which the at least one rear protrusion has a depth of at least 5 mm. 
     
     
         4 . The air disc brake pad as claimed in  claim 1 , in which the at least one rear protrusion has a depth of at least 6 mm. 
     
     
         5 . The air disc brake pad as claimed in  claim 1 , in which the thickened edge and rear protrusion are spaced apart. 
     
     
         6 . The air disc brake pad as claimed in  claim 1 , in which the at least one rear protrusion is disposed substantially adjacent to the inner side of the backplate. 
     
     
         7 . The air disc brake pad as claimed in  claim 1 , in which at least a portion of the thickened edge is substantially L-shaped. 
     
     
         8 . The air disc brake pad as claimed in  claim 1 , in which the air disc brake pad is substantially symmetrical about a central vertical axis extending from the inner side and the outer side. 
     
     
         9 . An air disc brake pad for inserting into a brake pad carrier, the brake pad including a backplate and a friction material mounted on one side of the backplate, the pad periphery including an inner side, an outer side and first and second ends;
 in which the brake pad includes first and second abutment tabs for providing horizontal abutment with the brake pad carrier, the first abutment tab extending from the first end and the second abutment tab extending from the second end; and   at least one rear protrusion extending from the backplate in a direction opposing the friction material.   
     
     
         10 . A method of providing a poka-yoke to prevent incorrect assembly of an air disc brake pad to a brake caliper; the method comprising providing the air disc brake as claimed in  claim 1 , in which the at least one rear protrusion can only be accommodated by a corresponding gap in a backplate facing side of the brake caliper.